LS1043 CPLD READ

[carlos-m-ribeiro]

Good afternoon, we are using an u-boot for ls1043 in QSPI with our custom board but if we read from address 0x7fb00000 where we have our cpld, the value read is always 0xff:

=> md.b 0x7fb00000 1
7fb00000: ff .
=> md.b 0x7fb00000 1
7fb00000: ff .
=> md.b 0x7fb00000 2
7fb00000: ff ff

We verify all configurations and we did many tests since many weaks ago. If possible, with your experience, could you review quickly our IFC configurations in attached files.

Thank you

[ufedor]

How exactly the RCW[IFC_MODE] value is altered?

Have you edited the ".rcw" file and rebuild the composite firmware image?

Please provide SPI firmware binary images operational and with altered RCW for inspection.

[carlos-m-ribeiro]

Good morning,

I am programming the swapped QSPI RCW binary file (see file) with the RCW[IFC_MODE] value altered in QSPI address 0x0 and after I am programming the u-boot.bin file in QSPI address 0x100000.

Thank you

[ufedor]

Which exactly method you are using to modify the RCW field value?

[carlos-m-ribeiro]

Changing only the IFC mode using code warrior and maintaining the rest of RCW equal.

Thank you

[ufedor]

Please note that there is CRC which has to be re-calculated after the RCW change.

[carlos-m-ribeiro]

Thank you for your advise. Now, we can boot from QSPI but all CPLD reads from 0x7fb00000 are 0xff.